16373993 has 2 divisors, whose sum is σ = 16373994. Its totient is φ = 16373992.

The previous prime is 16373977. The next prime is 16374037. The reversal of 16373993 is 39937361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15389929 + 984064 = 3923^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 16373993 - 2⁴ = 16373977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16373993.

It is not a weakly prime, because it can be changed into another prime (16373923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8186996 + 8186997.

It is an arithmetic number, because the mean of its divisors is an integer number (8186997).

Almost surely, 2^16373993 is an apocalyptic number.

It is an amenable number.

16373993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16373993 is an equidigital number, since it uses as much as digits as its factorization.

16373993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 41.

The square root of 16373993 is about 4046.4790868112. The cubic root of 16373993 is about 253.9324484011.

The spelling of 16373993 in words is "sixteen million, three hundred seventy-three thousand, nine hundred ninety-three".